Took several decades before the effects of asbestos were understood. Takes more than 10 years for most cancers to show themselves in response to an environmental condition. Several credible studies, many out of Sweden, have looked at cell phone use 10 years or beyond and have found slight increases in certain cancers. Others have found effects on learning and conditions such as headaches. Most of us haven't used cell phones that long, let alone used Wi-Fi. Yeah, this guy is perhaps overly paranoid, but I wouldn't write off anybody as crazy until enough time has passed. BTW: Last week the city of Salzburg in Austria banned Wi-Fi in all public schools. So Fred ain't the only one concerned about kids. The Brits, having concluded that kids should limit cell phone exposure, have just launched their own study into Wi-Fi. I'm a big lover in wireless technologies, but I'm not about to completely dismiss potential long-term health issues related to electromagnetic frequencies just because the industry, and industry-funded studies, suggest it's safe. That said, we're so bathed in these frequencies that if a problem ever does emerge we'll all be doomed anyways.